Grapple-hook.



S. HOLSTROM.

GRAPPLE HOOK. APPLICATION FILED 0CT.28{19I5- 1 58,229. Patented Mar. 5, 1918.

Witness svnnnonsrnoiygor HIGHLAND PARK, ILLINOIS.- I i I enArPLE-Hoom Specification of Letters Patent.

Application filed October as, 1915.. Serial No.I'5s,s21.

To all whom it'ma'y concern. p

Beit known thatl, Sven HoLs'rnoM, a citizen of the United States, residing at Highland Park, in the-county of Lake and State of Illinois, have invented certain new and useful Improvements inGrapple-Hooks, of which the following is aispecification.

My invention relates to a hook and particularly tomeans :to normally maintain the sections thereof closed against accidental; opening but permitting opening at desired times through suitable operation, in the respects mentioned therefore being especially desirable as a grapple hook structure.

Specifically, theinvention aims to provide a hook having aplurality of pivoted parts connected by a link to which a chain or the like is attached, and which link has a curved or cainmed portion and a substantially straight portion, both movable through enlarged eyes in the hook members.

Also I particularly aim to provide means to reinforce the pivoted hook sections directly above the portions where they are engaged by the said link, such reinforcing means particularly being in the nature of a flange to overlap the complemental section of the hook.

I also aim to provide an effective means to prevent relative lateral movement of the pivoted sections, when closed.

With the above and additional objects such as will hereinafter appear, in View, the invention has been embodied in one preferred form as illustrated in accompanying w drawings, wherein:

Figure 1 is a front elevation of my improved hook structure;

Fig. 2 is a side elevation of my improved hook structure; 7 V

Fig. 3 is a front elevation'ofmy improved hook structure showing the hook sections in open position, and

Fig. 4 is an inverted plan view of the pivoted hook sections.

Referring specifically to the drawings, the hook is shown as comprising two sections 1 and 2 pivoted together as by means of a pin 3 approximately midway of their ends. Each section 1 and 2 is provided with an. ordinary hook'portion 4 to inclose a'space 5 through which the element supported passes. As a safeguard'against spreading of the portions 4 and 'in order to reinforce such portions, one section 4 isbifurcated to provide a slot 6 andithe other portion 4: is

supports the hook is slack tions 12 is disposed within rectly to the link 10 or,

connect with a link such as is shown at 14 in Fig. 1. It will be realized that the clos said slot 6 when the sectionsare.closed.as in Figs. 1, 2, and 4. 1 V p Each :S8Ct1QII.1 and-2 has-a connecting Patented Mars:5;;19182 reduced to" form a tongue. 7 which enters arm 8, having an aperture 9 enlarged-with respectto the. transverse sect onalarea of, 1

lets.

By meansof this single link 10 I control thepositions of the two hook more substantially straight portions 11 and one or more curved portions'12.

the load is connected to the hook tion shown in F ig. 1 and inmoving to such position, one of the portions 12 engages the arms 8 at the apertures 9, serving as steam members 1 and 2. Therefore, this link should have one or .7

the .link 10 which passes: through said ey e- 1n connection with such arms and drawing 1 the arms together to the position shown in Fig. 1 and holding said arms against acci dental displacement.

' If the hook sections are to be opened, the action is accomplished while the 'chain'which the link 10 until one of the straight porthe apertures 9, whereupon, due to the enlargement of the and by turning apertures, the hooksections maybe swung relatively, with arms 8 moving on one straight portion 11, to'open the hook por-.

tions as in Fig. 3, to

permit detachment or attachment of the load.

It will be realized that considerable strain 7 will fall upon thearmsS above the apertures 9 andto obviate this drawback, I provide an arcuate flange 13 to overlap and engage the upper-portions of arm 8 of section 1.

Flange 13 is preferably formed integral with 7 7 i the arm .8 of section V As previously intimated, the hook issu'pported from a chain or flexible element which may connect in any suitablewaydiif preferred, may

ing of the hook is automatic through tightening of the supporting chain therefor.

' If sections 1 and 2 were permitted to open. '7 I stances and for this reason, I prefertoprovide an abutment 15 on one section, for in- I 7 Copies 0! this patent may be obtained for has been illustrated and described, it is to be understood that changes in the details of construction may be resorted to Within the spirit and scope of the appended claim.

7 I claim: 7 v

V In a suspending device, a plurality of relatively movable suspending sections, each section having a connecting arm'provided with an aperture, one of said arms having 1 a flange thereon, a link passing through said aperture adapted'to close and normally maintain the sections in a closed position,

open thereon,

said apertures being enlarged With respect to the portion of the link-passing therethroughto permit the sections to open thereon, one of said arms being enlarged adja cent its aperture to permit the sections tov said'link being provided with a cam portion, one of said sectlons belug provided with an abutment formed integral therewith and engageable :by the other section substantially asidescribed. V 1 In testimony whereof I aflixmy signature in the presence of twowitnesses.

Witnesses: i O. L.' OLEsEN, 7 ROBERT W. PEASEV.

SVEN HOLSTROM. V

five cents each. by addressina' the 00311113910118? of Patents, washingtemnic. a 

